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Mechanics

Mechanics is the branch of physics that deals with the interactions of objects and forces in the observable world. Questions asking about projectile motion, conservation of energy, and calculus based mechanics are perfect for this topic, but questions about repairs that a mechanic would do belong in our vehicles categories.

2,416 Questions

What is the misplaced modifier in the sentence Around the corner the sign reads forty-five miles per hour?

The misplaced modifier in the sentence is "Around the corner." It should be placed next to the word it is modifying, most likely "sign," to clarify that the sign, not the corner, reads forty-five miles per hour.

What would be the velocity of a deepwater wave with a wavelength of 50 meters and a period of 6.5 second?

The velocity of a deepwater wave can be calculated using the formula v = L/T, where v is the velocity, L is the wavelength (50 meters), and T is the period (6.5 seconds). Substituting the values gives v = 50 meters / 6.5 seconds ≈ 7.69 m/s.

Does water temperature change after using alka seltzer?

According to the law of conservation of mass, no it doesn't. It doesn't all stay in the glass, though; some of it escapes into the atmosphere as CO2 but if you were to capture that, you'd have all the mass you started with.

If the coefficient of static friction is 0.3 how much more force is needed to lift the object than start it sliding?

for lifting the object there is no role of friction,but of air friction.since no info,. is given about it so air friction = 0.thereby for lifting we have mg = mass * 9.8 (the wight of the object). and for sliding we have 0.3*mg . therefore 0.7mg of more force is required to lift it.

What causes white smoke out of your exhaust at 75 miles per hour or more?

White smoke at high speeds may indicate a coolant leak into the combustion chamber or a problem with the fuel injector. It is recommended to have the vehicle inspected by a mechanic to determine the exact cause and address the issue promptly to prevent further damage.

What makes the whistling noise on bombs as they fall?

If you've ever seen a bomb you will notice that there are tail-fins. There are two purposes to these fins.

  1. To make the bomb fall where it is intended to go. Hitting a target with a bomb is a hard thing to do and a lot of technology goes into making a bomb the right shape to 'fall straight.'
  2. These tail-fins are also modified to make the screaming sound as they fall; to add a dimension of terror to a bombing raid.

Movement of an all object is compared with a?

The movement of an object is compared with a reference point or frame of reference to determine its speed, velocity, and acceleration. This comparison helps to understand the object's motion relative to a fixed point or another moving object.

How high does the average slingshot shoot?

The average slingshot can shoot projectiles at speeds of around 100-200 feet per second (30-60 meters per second). This typically translates to a maximum range of 100-200 yards (90-180 meters) depending on the design and quality of the slingshot.

Why after 24 hours helium balloon won't fly what is happening with the helium?

Helium atoms are very small and able to diffuse through the balloon material over time, leading to a loss of buoyancy. As a result, the balloon becomes deflated and unable to lift the weight of the rubber and any attachments.

Values of static and dynamic coefficient of friction for concrete to soil?

The static coefficient of friction between concrete and soil typically ranges from 0.6 to 1.0, while the dynamic coefficient of friction is usually slightly lower, ranging from 0.5 to 0.8. These values can vary based on factors such as the roughness of the surfaces and the presence of any contaminants like water or debris.

Under favorable circumstances including reaction time a motor vehicle with good brakes going 50 miles per hour can be stopped within how many feet?

The typical BREAKING distance from 50mph is 38meters, but the overall stopping distance is 53meters (overall stopping distance is made up of thinking distance, which is 15meters in this case, + breaking distance)

Sports where friction is either supporting or opposing these games?

Skiing and snowboarding (Skis rubbing against snow slows them down)

Skateboarding (Rolling friction, it's a matter of opinion if it supports or opposes them)

Swimming (fluid friction makes it harder for them to swim against it)

Those are just a few.

Sound waves travel by vibrations in what?

Sound is energy of mechanical vibration transferred through a medium.

Commonly the medium is air, but solids, liquids and gasses all transmit sound. Indeed, sound travels faster through liquid and solids than through gas.

Sound does not propagate through a vacuum.

What was the fastest mph in spank the monkey?

i got 10,022 but im not sure if that's the fastest, i looked up the average and it was 3458 and one eighth

Is flying a kite a density application?

Yes, flying a kite is a density application because it involves utilizing the density difference between the air inside the kite and the surrounding air to generate lift. By harnessing this density differential, the kite is able to fly in the air.

An object experiences a net zero external unbalanced force is it possible for the object to be travelling with a non-zero velocity?

Yes, it is possible for an object to be traveling with a non-zero velocity even if it is experiencing a net zero external unbalanced force. This is because the object may have inertia, which allows it to maintain its current velocity unless acted upon by an external force.

How do different materials affect light and sound waves?

Light slows as it enters material with a higher density whereas sound waves speed up in materials of higher density.

Light bends towards the "normal" as it passes from a less dense medium to a higher density medium ie air into glass.

Both sound and light can be reflected from surfaces.

If the net force is zero is the force balanced or unbalanced?

The the forces are unbalanced, that means that the net force is non-zero.

Which is a property of light waves but not sound waves?

why cannot it be both? by definition, amplititude is the extreme range of fluctuating quantity. swing range of a pendulum, current flow,bla,bla,bla. amplitude MODULATION is in reference to radio waves with regards to signal RANGE ie: AM Radio- amplitude modulation am bounces and the range of frequency is modulated within the extreme band withs of the wave.

Find the momentum of a tennis ball of mass 60.0 grams served with velocity 65.0 miles per second?

Momentum (P) is the product of mass (m) and velocity (v).

P = m X v

It's easy to get confused by combining metric units (grams) with imperial units (miles per second). Converting all the units to one system first will simplify calculations.

What is the net force when you combine a force of 7N north with a force of 5N south?

The net force is 2N north. This is because when you subtract the 5N force south from the 7N force north, you get a resultant force of 2N north.

Is uranium soft?

Hardness of uranium metal:

Mohs hardness: 6

Brinell hardness: 2 400MN/m2

Vickers hardness: 1 960 MN/m2

Uranium is very hard and also very dense (19,05 g/cm3). Depleted uranium is used for artillery shells (also for tanks armour) to give it Armour piercing capability.

Why do they call it 100 mph tape?

"100 mph tape" is a nickname often used for duct tape because of its versatility, durability, and ability to hold up even at high speeds like 100 mph. It is known for its strong adhesive properties and wide range of uses in emergency situations, repairs, and construction work.

What is the difference between sound waves and earthquake waves?

Sound waves are generated by vibrations in air or a medium and travel in all directions from the source, whereas earthquake waves are generated by the sudden release of energy in the Earth's crust and travel through the Earth. Sound waves are longitudinal waves that can travel through gases, liquids, and solids, while earthquake waves consist of P-waves (compressional waves) and S-waves (shear waves) that travel at different speeds and have different effects on the Earth's surface.